Problem: album_directory.php file keeps changing...disabling my phpAlbum

Time to time, my phpAlbum keeps getting disabled. I think I have traced it to the album_directory.php file. The file seems to keep changing. If I restore a known good copy, it starts working again.

Any idea what could cause this file to change size? below is a list of my backups for this file.
dec 13, everything was OK (file size 96420)
Dec 14th it got smaller. (file size 6930)
I restored the 13'th version, and everything was OK again..

There are a lot of pictures..could there be a issue with too many pictures? Maybe the automatic scan is messing up? Any ideas?

http://seeberg.com/phpAlbum

Available snapshots for album_directory.php Action Size (bytes) Last Modified
Current version of album_directory.php - 96420 Wed, 14 Dec 2011 16:28:31
Thu, 15 Dec 2011 12:00:00 - Same as current
Thu, 15 Dec 2011 04:00:00 - Same as current
Thu, 15 Dec 2011 00:00:00 - Same as current
Wed, 14 Dec 2011 20:00:00 - Same as current
Wed, 14 Dec 2011 16:00:00 Restore | Rename 6930 Tue, 13 Dec 2011 19:11:04
Wed, 14 Dec 2011 08:00:00 Restore | Rename 6930 Tue, 13 Dec 2011 19:11:04

Tue, 13 Dec 2011 08:00:00 Restore | Rename 96420 Mon, 12 Dec 2011 18:34:41
Mon, 12 Dec 2011 08:00:00 Restore | Rename 96420 Sat, 10 Dec 2011 17:58:28
Sun, 11 Dec 2011 08:00:00 Restore | Rename 96420 Fri, 09 Dec 2011 17:48:03
Sat, 10 Dec 2011 08:00:00 Restore | Rename 96420 Thu, 08 Dec 2011 16:31:58


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